rug {graphics}R Documentation

Add a Rug to a Plot

Description

Adds a rug representation (1-d plot) of the data to the plot.

Usage

rug(x, ticksize=0.03, side=1, lwd=0.5, col,
    quiet = getOption("warn") < 0, ...)

Arguments

x A numeric vector
ticksize The length of the ticks making up the ‘rug’. Positive lengths give inwards ticks.
side On which side of the plot box the rug will be plotted. Normally 1 (bottom) or 3 (top).
lwd The line width of the ticks.
col The colour the ticks are plotted in, default is black.
quiet logical indicating if there should be a warning about clipped values.
... further arguments, passed to axis(...), such as line or pos for specifying the location of the rug.

Details

Because of the way rug is implemented, only values of x that fall within the plot region are included. There will be a warning if any finite values are omitted, but non-finite values are omitted silently.

Because of the way colours are done the axis itself is coloured the same as the ticks. You can always replot the box in black if you don't like this feature.

References

Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S. Wadsworth & Brooks/Cole.

See Also

jitter which you may want for ties in x.

Examples

data(faithful)
with(faithful, {
    plot(stats::density(eruptions, bw=0.15))
    rug(eruptions)
    rug(jitter(eruptions, amount = .01), side = 3, col = "light blue")
})
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